 | Bulbs. | (3) |
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 | Summer flowering bulbs / . Cathey, Henry Marcellus, 1928- 2n Washington, D.C. : U.S. Dept. of Agriculture, 1971. | |
| Spring flowering bulbs / . Cathey, Henry Marcellus, 1928- 2n Washington, D.C. : U.S. Dept. of Agriculture, 1971. | |
| Summer flowering bulbs / prepared by Crops Research Division, Agricultural Research Service. | |
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